Battery system, battery management system, power consuming device and energy storage device

Abstract

The application provides a battery system, a battery management system, a power utilization device and an energy storage device, and belongs to the technical field of batteries. The battery system comprises: a plurality of battery sub-zones, any one of the plurality of battery sub-zones comprising: a battery configured to output electric energy; and a battery detection device connected with the battery and configured to detect a state of the battery to obtain battery state information; and a first controller in communication connection with the battery detection device and configured to control any one of the plurality of battery sub-zones according to the battery state information of the battery sub-zone, wherein the first controller is configured to: for any one of the plurality of battery sub-zones: according to the battery state information of the battery sub-zone, control the battery in the battery sub-zone to output or not output electric energy, and any two of the plurality of battery sub-zones comprising different battery detection devices respectively. The battery system can realize reasonable control of the battery system.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery system, a battery management system, an electrical device, and an energy storage device. Background Technology

[0002] Energy conservation and emission reduction are key to sustainable social development. Rechargeable batteries, with their ability to store and release energy as needed, are widely used in various electrical devices and energy storage systems, and are an important component in promoting energy transition and sustainable development. For the new energy industry, battery technology is a crucial factor in its development.

[0003] Currently, battery systems consist of batteries and their associated battery management systems. With the development of battery technology, battery combinations and structures have become increasingly complex and diverse, placing higher demands on battery reliability. Accurate detection of the battery state within the system, and thus the proper control of batteries with complex structures, is therefore crucial. Summary of the Invention

[0004] This application aims to at least address the technical problem of the lack of a reasonable control method for multi-battery systems in the prior art. Therefore, one objective of this application is to provide a battery system that achieves reasonable control over the battery system.

[0005] An embodiment of the first aspect of this application provides a battery system, including: a plurality of battery partitions, each of the plurality of battery partitions including: a battery configured to output electrical energy; a battery detection device connected to the battery and configured to detect the state of the battery to obtain battery state information; and a first controller communicatively connected to the battery detection device and configured to control the battery partition according to the battery state information of the battery partition of the plurality of battery partitions, wherein the first controller is configured to: for any one of the plurality of battery partitions: control the battery in the battery partition to output or not output electrical energy according to the battery state information of the battery partition, and any two battery partitions of the plurality of battery partitions respectively include different battery detection devices.

[0006] In the technical solution of this application embodiment, by setting multiple partitions in the battery system, each partition is equipped with an independent battery and a battery detection device, independent detection of each battery partition can be achieved, reducing interference between them. This allows for flexible control of each battery partition; for example, if a detection failure occurs in one partition, other partitions can still perform detection normally, and each battery partition can be controlled independently. Based on the battery status of each battery partition, corresponding control is applied to each battery partition, enabling redundant power supply to the battery system and improving the reliability of the power supply process.

[0007] In some embodiments, the battery detection device includes: a first detection device connected to the battery and configured to detect the battery state in a first detection mode to obtain battery state information; or a second detection device connected to the battery and configured to detect the battery state in a second detection mode to obtain battery state information, wherein the second detection mode is different from the first detection mode. Using different battery detection devices in different battery zones can reduce the risk of simultaneous malfunctions of various battery detection devices and improve the reliability of the detection process.

[0008] In some embodiments, the first detection device includes: a voltage divider circuit connected to the battery and configured to divide the voltage output by the battery; and a second controller communicatively connected to the voltage divider circuit and configured to acquire battery status information. Using a voltage divider circuit and a controller to detect battery status enables high-precision detection of battery status and provides more accurate battery status information.

[0009] In some embodiments, the first detection device further includes a conversion device connected between the voltage divider circuit and the second controller, and configured to transmit the divided voltage to the second controller. By obtaining a signal type usable by the second controller through the conversion device, the second controller can accurately detect the battery state, ensuring the normal operation of the detection process.

[0010] In some embodiments, the conversion device includes a decoder or an analog-to-digital converter. By appropriately selecting the types of components in the conversion device, the design can be flexibly adapted to the application, thereby improving the applicability of the battery detection device.

[0011] In some embodiments, the first detection device further includes a first isolation device connected between the second controller and the first controller, for transmitting battery status information to the first controller. The isolation device between the second controller and the first controller can suppress interference signals, reduce interference signals entering the first controller, and achieve accurate control of each battery compartment.

[0012] In some embodiments, the second detection device includes at least one detection element connected to the battery and configured to detect the battery's state. By selecting a suitable detection element based on the battery type specified in the battery compartment, a flexible design of the battery detection device can be achieved to meet different detection needs, improving the accuracy and flexibility of the detection process.

[0013] In some embodiments, the second detection device further includes at least one second isolation device connected between at least one detection element and the first controller, for transmitting battery status information to the first controller. Providing an isolation device between the detection element and the first controller can suppress interference signals, reduce interference signals entering the first controller, and achieve accurate control of each battery compartment.

[0014] In some embodiments, at least one second isolation device corresponds one-to-one with at least one detection element, and any one of the at least one second isolation devices is connected between the corresponding detection element and the first controller. By setting a corresponding isolation device for each detection element, interference suppression can be performed on the battery state information collected by each detection element, thereby improving the accuracy of the detection results.

[0015] In some embodiments, any two battery partitions among the plurality of battery partitions each include a second detection device, and the detection elements in the second detection devices are different. For different battery partitions, the detection elements can be reasonably designed, and different battery detection devices can be designed for different battery partitions to achieve flexible detection of battery status and increase the applicability of the battery detection device.

[0016] In some embodiments, any two battery partitions among the plurality of battery partitions respectively include a first detection device and a second detection device. Different types of detection devices can be used for different battery partitions, and different battery detection devices can be designed for different battery partitions to achieve flexible detection of battery status and increase the applicability of the battery detection devices.

[0017] In some embodiments, any two battery partitions in the plurality of battery partitions contain different batteries. Using different types of batteries in different battery partitions can effectively improve the redundancy of the power supply process, reduce the risk of power failure in different usage scenarios, and increase the reliability of the battery system.

[0018] In some embodiments, controlling the battery in a battery partition to output or not output power based on the battery status information of the battery partition includes: controlling the battery in the battery partition to output power in response to the battery status information of the battery partition meeting preset voltage and current conditions; and controlling the battery in the battery partition not to output power in response to the battery status information of the battery partition not meeting the voltage and / or current conditions. Timely control of the battery in a battery partition to stop supplying power when a battery in the partition malfunctions can improve the safety of the power supply process and reduce the risk of serious damage due to battery malfunction.

[0019] An embodiment of the second aspect of this application provides a battery management system, including: a battery detection device connected to a battery and configured to detect the state of the battery to obtain battery state information, the battery detection device being disposed in any one of a plurality of battery partitions in the battery system, and any two battery partitions in the plurality of battery partitions respectively including different battery detection devices; and a first controller communicatively connected to the battery detection device and configured to control the battery partition according to the battery state information of any one of the plurality of battery partitions, wherein the first controller is configured to: for any one of the plurality of battery partitions: control the battery in the battery partition to output or not output electrical energy according to the battery state information of the battery partition.

[0020] An embodiment of the third aspect of this application provides an electrical device that includes the battery system described in the above embodiments, the battery system being used to provide electrical energy.

[0021] An embodiment of the fourth aspect of this application provides an energy storage device, which includes the battery system described in the above embodiments, the battery system being used to store electrical energy.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0023] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0024] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0025] Figure 2 This is a schematic block diagram of a battery system according to some embodiments of this application;

[0026] Figure 3 This is a schematic block diagram of a battery system according to some embodiments of this application;

[0027] Figure 4 This is a schematic block diagram of a first detection device and a second detection device according to some embodiments of this application;

[0028] Figure 5 This is a schematic block diagram of a first detection device and a second detection device according to some embodiments of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1000 vehicles;

[0031] Battery system 100, controller 200, motor 300;

[0032] Battery partition 110, first controller 120;

[0033] Battery 111, battery detection device 112, first detection device 1121, second detection device 1122, voltage divider circuit 1123, sampling device 1124, second controller 1125, conversion device 1126, first isolation device 1127, detection element 1128, second isolation device 1129. Detailed Implementation

[0034] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0036] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0039] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0040] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0041] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0042] Currently, the application of rechargeable batteries is becoming increasingly widespread, judging from market trends. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in various electronic devices, such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As the application areas of rechargeable batteries continue to expand, the market demand is also constantly increasing.

[0043] Currently, battery systems consist of batteries and their associated battery management systems. With the development of battery technology, battery combinations and structures have become increasingly complex and diverse. For example, multi-battery systems use multiple battery combinations for power supply. As battery structures become more diverse, higher demands are placed on battery reliability. For multi-battery systems with different structures, accurate detection and proper control of the battery states within the system are particularly important.

[0044] A multi-battery system can be configured with multiple independent battery zones, each capable of independently outputting power. Each battery zone can also be equipped with its own independent detection device. Different battery detection devices are used in different battery zones to monitor the status of the batteries within that zone. Furthermore, each battery zone can be individually controlled based on the detection results from its respective detection device.

[0045] Using such a battery system, independent sampling of each battery compartment can be achieved, obtaining accurate battery status for each compartment. By setting different battery detection devices in different compartments, flexible detection of battery status can be achieved. For example, the risk of all battery detection devices malfunctioning simultaneously can be effectively reduced, further enabling more flexible power supply control for each battery compartment.

[0046] The battery system disclosed in this application can be used, but is not limited to, in electrical devices or energy storage devices such as vehicles, ships, or aircraft. A power system for such an electrical device or energy storage device can be constructed using the battery system disclosed in this application, which helps to improve the accuracy and reliability of battery state detection results.

[0047] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0048] This application also provides an energy storage device that uses a battery as a power source. The energy storage device can be, but is not limited to, an energy storage container, an energy storage cabinet, an energy storage power station, an energy storage battery pack, or a portable energy storage system.

[0049] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0050] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery system 100 is installed inside the vehicle 1000, and the battery system 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery system 100 can be used for low-voltage power supply to the vehicle 1000; for example, the battery system 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery system 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0051] In some embodiments of this application, the battery system 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0052] This application provides a battery system. (See reference...) Figure 2 The battery system 100 includes multiple battery compartments 110 and a first controller 120.

[0053] Any one of the multiple battery partitions 110 includes a battery 111 and a battery detection device 112.

[0054] Battery 111 is configured to output electrical energy.

[0055] The battery detection device 112 is connected to the battery 111 and is configured to detect the state of the battery 111 in order to obtain battery state information.

[0056] Any two battery partitions 110 in the plurality of battery partitions 110 include different battery detection devices 112.

[0057] The first controller 120 is communicatively connected to the battery detection device 112 and is configured to control the battery partition 110 based on the battery status information of any one of the multiple battery partitions 110.

[0058] In embodiments of this application, the term "battery" may encompass a single battery cell, or a series, parallel, or hybrid configuration of multiple battery cells (e.g., a battery pack or battery module).

[0059] In the battery system 100, multiple battery compartments 110 can be provided. Each battery compartment 110 is independent of each other and can be charged or discharged independently. The multiple battery compartments 110 can be divided according to the function of the batteries in the electrical system, or according to the structural design of the battery casing and / or internal structure. Figure 2 In the example shown, the battery system 100 has two battery partitions 110. It should be understood that in other embodiments, more battery partitions may be provided, and this application does not limit this.

[0060] Each battery compartment 110 is equipped with a battery 111 and a battery detection device 112. The battery 111 can be used to supply power to external electrical devices, outputting electrical energy to them. In some embodiments, the battery 111 is a rechargeable battery, and an external charging device can also charge the battery 111 to replenish its charge. The battery detection device 112 can detect the state of the battery 111, for example, it can collect data such as the battery voltage, output current, and battery temperature to obtain battery state information.

[0061] Different battery detection devices 112 can be used in different battery compartments 110. For example, the battery detection devices 112 in different battery compartments 110 can use different types of components, different numbers of components, and different detection methods. Depending on the different designs of the battery detection devices 112, the battery status information can have different data formats.

[0062] The first controller 120 is communicatively connected to the battery detection devices 112 in each battery compartment 110 (in Figure 2 (Dash lines are used to indicate connections). The battery status information detected by the battery detection device 112 can be transmitted to the first controller 120 through a specific data format. The first controller 120 can be of various types, such as a microcontroller unit (MCU) or a control system. In some embodiments, the first controller 120 can also be a battery management unit (BMU) or integrated into a battery management unit.

[0063] Based on the received battery status information of each battery compartment 110, the first controller 120 can control each battery compartment 110 separately. For example, when the received battery status information of a certain battery compartment 110 is abnormal, the first controller 120 can accurately determine which battery compartment 111 the abnormal battery 111 is located in based on the source of the abnormal battery status information, and then stop the battery 111 in that battery compartment 110 from outputting power, disconnecting it from external power consumption equipment or charging equipment, thereby isolating the abnormal battery 111; while for other normal battery compartments 110, the first controller 120 will control the batteries 111 in these battery compartments 110 to continue outputting power according to usage requirements.

[0064] By setting up multiple partitions in the battery system, with each partition containing an independent battery and battery detection device, independent detection of each battery partition can be achieved, reducing interference between them. This allows for flexible control of each battery partition; for example, if a detection fault occurs in one partition, other partitions can still perform detection normally, and each battery partition can be controlled independently.

[0065] According to some embodiments of this application, reference is made to Figure 3 The battery detection device 112 includes a first detection device 1121 or a second detection device 1122.

[0066] The first detection device 1121 is connected to the battery 111 and is configured to detect the state of the battery 111 in a first detection mode to obtain battery state information.

[0067] The second detection device 1122 is connected to the battery 111 and is configured to detect the state of the battery 111 in a second detection mode to obtain battery state information.

[0068] The second detection method differs from the first detection method.

[0069] Different types of battery detection devices can be installed in different battery zones 110. Figure 3 In the example shown, the two battery partitions 110 use a first detection device 1121 and a second detection device 1122, respectively.

[0070] The first detection device 1121 can detect the battery status using a first detection method. For example, it can use components such as an MCU to collect battery status data and transmit the obtained battery status information to the first controller 120. The second detection device 1122 can detect the battery status using a second detection method. For example, it can use an analog front-end (AFE) chip, also known as a battery sampling chip, to collect battery status data and transmit the obtained battery status information to the first controller 120 in a daisy chain manner.

[0071] The first detection device 1121 and the second detection device 1122 use different detection methods to detect the battery status. The first and second detection methods can be designed according to the different battery types to be detected; for example, a polling method or a daisy-chain method can be used to sample and detect the battery 111. For different first and second detection methods, corresponding first detection devices 1121 and 1122 will be used. The specific circuit structures of the first detection device 1121 and 1122 will be described in detail below.

[0072] Using different battery detection devices in different battery zones can reduce the risk of all battery detection devices malfunctioning simultaneously and improve the reliability of the detection process.

[0073] According to some embodiments of this application, reference is made to Figure 4 The first detection device 1121 includes a voltage divider circuit 1123 and a second controller 1125.

[0074] Voltage divider circuit 1123 is connected to battery 111 and configured to divide the voltage output by battery 111.

[0075] The second controller 1125 is communicatively connected to the voltage divider circuit 1123 and is configured to collect the status information of the battery 111.

[0076] exist Figure 4 In the example shown, the first detection device 1121 samples and detects the battery state through a voltage divider circuit 1123 and a second controller 1125. The second controller 1125 can be of various types, such as an MCU, a sampling chip, or a control system. In some embodiments, the second controller 1125 and the first controller 120 can be selected from different types of MCUs; for example, the second controller 1125 can be selected as an MCU suitable for high-voltage detection, while the first controller 120 can be selected as an MCU suitable for low-voltage detection.

[0077] The voltage divider circuit 1123 divides the voltage output from the battery 111, making it acceptable to the second controller 1125. The voltage divider circuit 1123 can be designed based on factors such as the output voltage of the battery 111 and the input voltage that the second controller 1125 can withstand. For example, it may include components such as resistors, capacitors, and transistors with different performance characteristics. The number of voltage divider circuits 1123 in each battery compartment 110 can be flexibly designed. For example, if a battery compartment 110 contains multiple battery cells, a separate voltage divider circuit 1123 can be set for each individual battery cell, or the same voltage divider circuit 1123 can be used for several battery cells.

[0078] In some embodiments, the second controller 1125 can sample the battery status, obtain battery status information, and transmit the battery status information to the first controller 120. That is, the second controller 1125 integrates sampling function and information processing function.

[0079] In other embodiments, such as Figure 5 As shown, the first detection device 1121 may also include a separate sampling device 1124, which samples the battery state and transmits the collected state information to the second controller 1125. The second controller 1125 processes the state information collected by the sampling device 1124 to obtain the battery state information and transmits it to the first controller 120. Figure 5 In the example shown, the first detection device 1121 detects the battery state by sampling through a voltage divider circuit 1123, a sampling device 1124, and a second controller 1125. The sampling device 1124 can collect different state information of the battery 111, such as sampling the voltage and current of the battery 111, or detecting the insulation performance of the circuit and collecting the battery temperature. The second controller 1125 performs different calculations based on the sampled values ​​obtained from the sampling device 1124, extracting various battery state information, such as the current battery state, remaining battery capacity, and battery charge / discharge related performance information, thereby obtaining the corresponding battery state information.

[0080] In some embodiments, the second controller 1125 can integrate multiple modules according to different testing requirements, such as an analog-to-digital converter (ADC) module, a counter, a comparator, and a microcontroller. The ADC module can convert the input voltage value into a digital signal. The counter can calculate the battery's charging and / or discharging time. The comparator can compare the battery voltage with a preset safe voltage threshold to determine the battery's safety status. The microcontroller can control the ADC module, counter, comparator, and other modules to process the collected voltage data and other detection data, determine the battery's safety status, and upload the detection results to a host computer, among other functions.

[0081] Using a voltage divider circuit and a controller to detect battery status can achieve high-precision detection of battery status and obtain more accurate battery status information.

[0082] According to some embodiments of this application, reference is made to Figure 4 The first detection device 1121 also includes a conversion device 1126.

[0083] The conversion device 1126 is connected between the voltage divider circuit 1123 and the second controller 1125 and is configured to transmit the divided voltage to the second controller 1125.

[0084] The conversion device 1126 can convert the data format and input the converted data into the second controller 1125, enabling it to analyze and process the relevant data of various batteries.

[0085] By converting the signal type that can be used by the second controller, the second controller can accurately detect the battery status and ensure the normal operation of the detection process.

[0086] According to some embodiments of this application, the conversion device 1126 includes a decoder or an analog-to-digital converter.

[0087] In some embodiments, the conversion device 1126 may use a decoder, such as a 3-to-8 decoder. In these embodiments, the voltage divider circuit 1123 inputs the divided voltage to the 3-to-8 decoder. Based on the divided voltage value and the performance parameters of the 3-to-8 decoder, a corresponding output signal is obtained. In one example, a battery 111 in a battery compartment 110 includes multiple battery cells, and each battery cell is provided with a voltage divider circuit 1123 and a 3-to-8 decoder connected to it. For each voltage divider circuit 1123, depending on whether its output voltage value is high or low, the 3-to-8 decoder connected to it will output different signals, which are input to the second controller 1125. The signals output by different 3-to-8 decoders can be input to the second controller 1125 through different I / O (input / output) interfaces. In this way, the status information of each battery cell can be received and processed by polling.

[0088] As described above, in some embodiments, the ADC module can be integrated into the second controller 1125. In other embodiments, the second controller 1125 may not integrate an ADC module, but instead use a conversion device 1126 to perform the analog-to-digital signal conversion. In these embodiments, the conversion device 1126 can also be an analog-to-digital converter. In the example mentioned above where a battery partition 110 contains multiple battery cells, a voltage divider circuit 1123 can be provided for each battery cell, and all voltage divider circuits 1123 can be connected to the same analog-to-digital converter. This analog-to-digital converter can convert the voltage output from each voltage divider circuit 1123 and input the converted data into the second controller 1125. In one example, the data output by the analog-to-digital converter can be transmitted to the second controller 1125 via a Serial Peripheral Interface (SPI).

[0089] By rationally selecting the types of components in the conversion device, the design can be flexibly adapted to the application, thereby improving the applicability of the battery testing device.

[0090] According to some embodiments of this application, reference is made to Figure 4 The first detection device 1121 also includes a first isolation device 1127.

[0091] The first isolation device 1127 is connected between the second controller 1125 and the first controller 120, and is used to transmit battery status information to the first controller 120.

[0092] The first isolation device 1127 can be used to block the transmission path of interference signals, thereby effectively suppressing interference signals during transmission. The first isolation device 1127 can be composed of components such as isolation chips.

[0093] By setting up an isolation device between the second controller and the first controller, interference signals can be suppressed, reducing the interference signals entering the first controller and enabling accurate control of each battery zone.

[0094] According to some embodiments of this application, reference is made to Figure 4 The second detection device 1122 includes at least one detection element 1128.

[0095] At least one detection element 1128 is connected to the battery 111 and configured to detect the state of the battery 111.

[0096] The second detection device 1122 can use daisy-chain communication to transmit battery status information. Daisy-chain communication is a common communication method used in battery control processes to transmit data and information between multiple devices, where each device is connected to a specific port of the next device, forming a chain structure.

[0097] In one example, the detection element 1128 can use a battery sampling chip, also known as an AFE chip. The AFE chip can sample the state of the battery 111, obtain battery state information, and transmit it to the first controller 120 in a daisy-chain manner.

[0098] In some embodiments, if a battery 111 in a battery partition 110 includes multiple battery cells, then a detection element 1128 can be provided for each battery cell, or the same detection element 1128 can be provided for several battery cells.

[0099] By selecting appropriate detection elements based on the battery type set in the battery partition, the battery detection device can be flexibly designed to meet different detection needs, thereby improving the accuracy and flexibility of the detection process.

[0100] According to some embodiments of this application, reference is made to Figure 4 The second detection device 1122 also includes at least one second isolation device 1129.

[0101] At least one second isolation device 1129 is connected between at least one detection element 1128 and the first controller 120 for transmitting battery status information to the first controller 120.

[0102] Similar to the first isolation device 1127, the second isolation device 1129 can also be used to block the transmission path of interference signals, thereby effectively suppressing interference signals during transmission. The second isolation device 1129 can be composed of components such as isolation chips.

[0103] By setting an isolation device between the detection element and the first controller, interference signals can be suppressed, reducing the interference signals entering the first controller and enabling accurate control of each battery zone.

[0104] According to some embodiments of this application, at least one second isolation device 1129 and at least one detection element 1128 correspond one-to-one. Any one of the at least one second isolation device 1129 is connected between the corresponding detection element 1128 and the first controller 120.

[0105] like Figure 4 As shown, for each detection element 1128, a corresponding second isolation device 1129 can be provided.

[0106] By setting up corresponding isolation devices for each detection element, interference suppression can be achieved on the battery status information collected by each detection element, thereby improving the accuracy of the detection results.

[0107] According to some embodiments of this application, any two battery partitions 110 in the plurality of battery partitions 110 respectively include a second detection device 1122, and the detection elements 1128 in the second detection device 1122 are different.

[0108] As described above, different battery detection devices 112 can be used in different battery partitions 110. In embodiments where multiple battery partitions 110 use the second detection device 1122, the detection elements 1128 in each battery partition 110 can be set to be different from each other. For example, different numbers, different models, and different performance AFE chips can be used for different battery performance in different battery partitions 110.

[0109] In one example, a suitable detection element 1128 can be selected based on factors such as the characteristic requirements of battery sampling accuracy in each battery partition 110 and the resources required for sampling, so as to achieve a compatible balance between design cost and detection performance.

[0110] For different battery zones, detection elements can be designed reasonably, and different battery detection devices can be designed for different battery zones to achieve flexible detection of battery status and increase the applicability of battery detection devices.

[0111] According to some embodiments of this application, any two battery partitions 110 in the plurality of battery partitions 110 respectively include a first detection device 1121 and a second detection device 1122.

[0112] In some embodiments, a first detection device 1121 and a second detection device 1122 may be used in any two battery partitions 110, respectively. In one example, the specific type of battery detection device 112 may be selected based on factors such as the characteristic requirements of battery sampling accuracy in each battery partition 110 and the resources required for sampling.

[0113] Different types of detection devices can be used for different battery compartments. Designing different detection devices for different battery compartments allows for flexible monitoring of battery status and increases the applicability of the detection devices. Because different battery compartments use different detection devices, the redundancy design safety of the battery system can be effectively improved, reducing the possibility of simultaneous failure of detection devices in different battery compartments due to the same cause of failure.

[0114] According to some embodiments of this application, the batteries 111 in any two of the plurality of battery partitions 110 are different.

[0115] Rechargeable batteries include batteries with different performance characteristics and materials. For example, rechargeable batteries can be manufactured using different materials such as ternary lithium, lithium iron phosphate, and lithium manganese oxide. Different types of batteries typically have different battery performance characteristics; parameters such as open-circuit voltage, operating temperature, and capacity may vary. In different battery compartments 110, the same or different types of batteries 111 can be used according to design requirements. For example, batteries 111 installed in different battery compartments 110 can be suitable for different operating temperatures, thus achieving stable power supply at different temperatures; or different battery compartments 110 can be designed with different structures, and the volume of the batteries 111 installed therein can be different, thus making them suitable for electrical devices with different structures.

[0116] Using different types of batteries in different battery zones can effectively improve the redundancy of the power supply process, reduce the risk of power failure in different usage scenarios, and increase the reliability of the battery system.

[0117] According to some embodiments of this application, the first controller 120 is configured to:

[0118] For any one of the multiple battery partitions 110:

[0119] Based on the battery status information of the battery partition 110, the battery 111 in the battery partition 110 is controlled to output or not output electrical energy.

[0120] Based on the battery status information of each battery compartment 110, the first controller 120 can determine the status of each battery 111, thereby quickly identifying abnormal batteries, isolating abnormal batteries, disconnecting them from external devices, and using the remaining normal batteries for power supply.

[0121] By controlling each battery zone according to its battery status, redundant power supply to the battery system can be achieved, improving the reliability of the power supply process.

[0122] According to some embodiments of this application, controlling whether the battery 111 in the battery partition 110 outputs or does not output electrical energy based on the battery status information of the battery partition 110 includes:

[0123] In response to the battery status information of the battery partition 110 meeting the preset voltage and current conditions, the battery 111 in the battery partition 110 is controlled to output electrical energy.

[0124] In response to the battery status information of the battery partition 110 not meeting the voltage and / or current conditions, the battery 111 in the battery partition 110 is controlled not to output electrical energy.

[0125] Based on the battery status information of each battery compartment 110, the first controller 120 can determine whether the status of the battery 111 in that battery compartment 110 is normal. Different voltage and / or current conditions can be determined for different batteries 111. In one example, the voltage condition can be set to the battery's output voltage being within a certain voltage range, and the current condition can be set to the battery's output current being within a certain current range. When the battery status information of a battery compartment 110 does not meet the voltage and / or current conditions corresponding to the battery 111 in that battery compartment 110, it is considered that the battery 111 in that battery compartment 110 is abnormal. The first controller 120 will control the abnormal battery to stop outputting power and use the remaining normal batteries for power supply.

[0126] When a battery in a battery compartment malfunctions, promptly stopping the power supply to that compartment can improve the safety of the power supply process and reduce the risk of serious damage caused by the battery malfunction.

[0127] Based on the same technical concept, embodiments of this application provide a battery management system.

[0128] The battery management system includes the battery detection device 112 and the first controller 120 in the above embodiments.

[0129] The battery detection device 112 is connected to the battery 111 and configured to detect the state of the battery 111 to obtain battery state information. The battery detection device 112 is disposed in any one of the plurality of battery partitions 110 of the battery system 100, and any two battery partitions 110 respectively include different battery detection devices 112.

[0130] The first controller 120 is communicatively connected to the battery detection device 112 and is configured to control the battery partition based on the battery status information of any one of the multiple battery partitions 110.

[0131] In some embodiments, the first controller 120 is configured to:

[0132] For any one of the multiple battery partitions 110:

[0133] Based on the battery status information of the battery partition 110, the battery 111 in the battery partition is controlled to output or not output electrical energy.

[0134] The implementation of the battery management system can refer to the implementation of the battery system 100, and the repeated parts will not be described again.

[0135] Based on the same technical concept, embodiments of this application provide an electrical device.

[0136] The electrical device includes the battery system 100 in the above embodiments. The battery system 100 is used to provide electrical energy.

[0137] Based on the same technical concept, this application provides an energy storage device.

[0138] The energy storage device includes the battery system 100 in the above embodiments. The battery system 100 is used to store electrical energy.

[0139] The embodiments of the power supply device and the energy storage device can be referred to the embodiment of the battery system 100, and the repeated parts will not be described again.

[0140] A specific embodiment of this application is described below. It should be understood that this specific embodiment is described for illustrative purposes only and should not be construed as limiting the scope of this application.

[0141] like Figures 2 to 5 As shown, the battery system 100 includes multiple battery compartments 110 and a first controller 120. Each battery compartment 110 includes a battery 111 and a battery detection device 112. Figures 2 to 5 The two battery compartments 110 shown in the diagram are respectively equipped with a first detection device 1121 and a second detection device 1122.

[0142] The first detection device 1121 may include a sampling device 1124, a voltage divider circuit 1123, a conversion device 1126, a second controller 1125, and a first isolation device 1127. The sampling device 1124 can collect voltage, current status information, insulation performance information, and battery temperature information of the battery 111. For each battery cell included in the battery partition 110, a corresponding voltage divider circuit 1123 is provided. The voltage divider circuit 1123 inputs the output voltage to the conversion device 1126 for conversion, and then inputs it to the second controller 1125. The second controller 1125 performs different calculations based on the sampled values ​​obtained by the sampling device 1124, and can extract various battery status information, such as the current battery status, remaining battery capacity, and battery charge / discharge related performance information. The second controller 1125 can transmit the acquired battery status information to the first controller 120 via the first isolation device 1127 through isolated communication.

[0143] The second detection device 1122 includes a plurality of corresponding detection elements 1128 and a second isolation device 1129. The detection elements 1128 use an AFE chip to sample the state of the battery 111, obtain battery state information, and transmit it via a daisy-chain method. Each detection element 1128 can transmit the acquired battery state information to the first controller 120 via the second isolation device 1129.

[0144] The first controller 120 analyzes and determines the battery status in each battery partition 110 based on the received battery status information of each battery partition 110, and performs corresponding control.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery system, characterized in that, include: Multiple battery partitions, any one of which includes: The battery is configured to output electrical energy; and A battery detection device, connected to the battery and configured to detect the state of the battery to obtain battery state information; and A first controller, communicatively connected to the battery detection device, is configured to control a battery partition based on the battery status information of any one of the plurality of battery partitions, wherein the first controller is configured to: For any one of the plurality of battery partitions: Based on the battery status information of the battery partition, the battery in the battery partition is controlled to output or not output power. Any two battery partitions among the plurality of battery partitions each include different battery detection devices, wherein the battery detection device includes: A first detection device, connected to the battery and configured to detect the state of the battery in a first detection method to obtain battery state information, the first detection device includes a second controller configured to collect the battery state information; or A second detection device is connected to the battery and configured to detect the state of the battery in a second detection method to obtain battery state information. The second detection device includes at least one detection element, which is connected to the battery and configured to detect the state of the battery. The second detection device uses daisy-chain communication to transmit the battery state information. The second detection method and the first detection method use different types of components to complete the function of collecting the state of the battery.

2. The battery system according to claim 1, characterized in that, The first detection device includes: A voltage divider circuit, connected to the battery and configured to divide the voltage output by the battery, is communicatively connected to the second controller.

3. The battery system according to claim 2, characterized in that, The first detection device further includes: A conversion device is connected between the voltage divider circuit and the second controller and is configured to transmit the divided voltage to the second controller.

4. The battery system according to claim 3, characterized in that, The conversion device includes a decoder or an analog-to-digital converter.

5. The battery system according to claim 2, characterized in that, The first detection device further includes: A first isolation device is connected between the second controller and the first controller for transmitting the battery status information to the first controller.

6. The battery system according to claim 1, characterized in that, The second detection device further includes: At least one second isolation device is connected between the at least one detection element and the first controller for transmitting the battery status information to the first controller.

7. The battery system according to claim 6, characterized in that, The at least one second isolation device corresponds to the at least one detection element, and any one of the at least one second isolation devices is connected between the corresponding detection element and the first controller.

8. The battery system according to claim 1, characterized in that, Any two battery partitions among the plurality of battery partitions each include the second detection device, and the detection elements in the second detection device are different.

9. The battery system according to any one of claims 1-7, characterized in that, Any two of the plurality of battery partitions include the first detection device and the second detection device, respectively.

10. The battery system according to any one of claims 1-8, characterized in that, The batteries in any two of the plurality of battery partitions are different.

11. The battery system according to claim 1, characterized in that, The step of controlling whether the battery in the battery partition outputs or does not output electrical energy based on the battery status information of the battery partition includes: In response to the battery status information of the battery partition meeting the preset voltage and current conditions, the battery in the battery partition is controlled to output electrical energy; In response to the battery status information of the battery partition not meeting the voltage condition and / or the current condition, the battery in the battery partition is controlled not to output electrical energy.

12. A battery management system, characterized in that, include: A battery detection device, connected to a battery and configured to detect the battery's state to obtain battery state information, is disposed in any one of multiple battery partitions in a battery system, and any two battery partitions respectively include different battery detection devices. Each battery detection device includes: a first detection device connected to the battery and configured to detect the battery's state in a first detection mode to obtain battery state information, the first detection device including a second controller configured to acquire the battery's state information; or a second detection device connected to the battery and configured to detect the battery's state in a second detection mode to obtain battery state information, the second detection device including at least one detection element connected to the battery and configured to detect the battery's state, the second detection device using daisy-chain communication to transmit the battery state information, and the second detection mode and the first detection mode using different types of components to complete the function of acquiring the battery's state. A first controller, communicatively connected to the battery detection device, is configured to control a battery partition based on the battery status information of any one of the plurality of battery partitions, wherein the first controller is configured to: For any one of the plurality of battery partitions: Based on the battery status information of the battery partition, control the battery in the battery partition to output or not output electrical energy.

13. An electrical appliance, characterized in that, Includes a battery system as described in any one of claims 1-11, the battery system being used to provide electrical energy.

14. An energy storage device, characterized in that, The battery system includes any one of claims 1-11, wherein the battery system is used to store electrical energy.

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